newuser1
Premier Customer
- Joined
- Nov 30, 2017
- Messages
- 35
- Reaction score
- 1
I just setup the 3CX software (free version) but when I go to settings and try to change my mail settings the type of email server is grayed out with 3CX SMTP server selected. If I click on test with 3CX selected I get error, AuthenticationInvalidCredentials: 5.7.0 Denied. Is it possible to change SMTP server if not how do I correct the authentication problem?